Flatworms. vamwe vamiririri

Unonzi anenge gumi nehafu zviuru mhando flatworms. Vose vari rakakamurwa nemakirasi matatu. Kirasi yokutanga zvinosanganisira turbellarians (ciliary), wechipiri - flukes, wechitatu - tepi flatworms.

vakauya munguva Proterozoic. Rakanga yomuzana rukoko matatu nemhuka bilateral symmetry. Kazhinji, flatworms zvikara unogutiswa majemusi. Live mhuka mumvura.

Flat parasitic Makonye akazviratidza gare gare. Ivo dzinoratidzwa nokuchinja mune munhu zvomudumbu zvomukati, pfungwa. Anogara flatworms izvi mumuviri mhuka, vanhu kana pamusoro muviri rehove. Vanovata chepfu, chirwere chakakomba, kuneta, uyewo zvikuru kuvadza ropa hurongwa. Medical ukoshi flatworms yakatanga akagadzira pedyo Scriabin. Academician vakatanga sainzi rose - Helminthology. The runoratidza ndiyo kuvapo parasitic mhando dzakasiyana zvishandiso (idioadaptatsy). Saka, mhuka idzi dzinowanikwa suckers zvokukochekera. Vari dzinoratidzwa guru uye kubereka.

Ciliated flatworms

Kirasi ichi chine vanenge zviuru zvitatu marudzi. Vanorarama kunyanya yakachena uye zvomumvura mvura. Apo neapo vanogona kuwanikwa muvhu.

Mumwe vamiririri turbellarians ndiyo dheri (chena) planar. Iye anogara mvura yakachena. muviri wayo ane mashizha zvakaumbwa, munhu wakananga shure magumo uye kuwedzerwa mberi. Length planarians hurongwa mumwe maviri masendimita.

Kubereka iri mhando rinoitwa zvose asexual uye zvepabonde nenzira. Muchiitiko chokutanga muchinjikwa Kuparadzana muviri muzvikamu zviviri.

Hermaphroditic dzokubereka nadzo uye akaronga zvakaoma. Cross muchangosangana.

flukes

kirasi iyi chinomiririrwa parasitic flatworms siyana. Vanorarama nevanhu uye vertebrate nhengo, uye vari kuwanikwa invertebrates. Kune vanenge zviuru zvina marudzi nehonye izvi.

Mumwe mumiririri - chiropa fluke. Ukuru muviri wayo jira-zvakadai anenge matatu - shanu masendimita. The vakuru vanogara bile ducts chiropa, nduru dundira muvanhu uye herbivores. Pazuva ventral divi uye pamberi muviri wake abdominal uye kunanzvana Kuziva. Achibatsirwa mano izvi flukes anogona kuramba ari pahondo muviri. Zvinofanira kucherechedzwa kuti zvisikwa izvi asi havaratidzi dzakabudirira pfungwa nhengo. Just akayangarara mumvura, asi mazana vane meso.

Flukes vari iwane chaizvo mhuka. Kubva imwe munhu mukati pavhiki kunogona kukwira mazai miriyoni. pakuzadzisa kwavo rinoitwa chete mumvura. Dura aumba kubva mazai kuita mazana, izvo zvinofanira kuwira zvenguva hondo.

Asexual nokupesana mazana rikaitika muviri mollusk (zvenguva hondo). Somugumisiro maberekero ichi yakabereka rudzi yose mazana, ane mamiriro afanane maumbirwo vakuru. Shure kwaizvozvo vanoenda kunze kwomuviri clam uye mugogara pamusoro mumhenderekedzo yegungwa algae. Akaumba cysts. Mukati mazana izvi zvinogona kurarama imwe nguva. Pamwe chete nezvokudya kana mvura rakapinza tupukanana mune womunhu kana mhuka muviri.

Chiropa flukes - hermaphrodites. Sexual kubereka rinoitwa wokupedzisira hondo muviri.

tapeworms

kirasi iyi ane zvuru zvitatu mhando parasitic siyana. Gara dzinenge dzose chete muura kwevanhu vertebrates siyana.

Tapeworms vane ribbonlike muviri zvinosanganisira mutsipa (chikamu umo saibva chipande zvikamu), uye musoro zvikamu, chimwe nechimwe inodzokororwa hermaphrodite kubereka hurongwa. zvikamu vakakura vari yakarongwa rwemberi pomuviri uye vakazadza mazai nourume.

Tapeworms angava kureba kubva munenge 0.5 millimeters kuti mamita gumi.

Nhengo yekirasi ndiyo bovine tapeworm. kukura kwayo kunobva cervix. In vakura bovine tapeworm parasitic ari ura duku nevanhu achabatanidza kumasvingo muviri suckers mana.